.fixed_nav_wrap{
    width: 80%;
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: rgba(0, 0, 0, 0.2) 0 1px 5px;
    background: #fff;
    overflow: auto;
    display: none;
    .fixed_nav{
        line-height: 40px;
        padding: 5px;
        user-select: none;
        li{
            float: left;
            list-style: none;
            cursor: pointer;
            padding: 0 18px;
            border-radius: 16px;
            font-size: 12px;
            font-weight: bold;
            color: #666;
            margin: 0 15px;
            &.tar_show{
                background: #fc3601;
                color: #fff;
            }
        }
        &:after{
            content: "";
            display: block;
            height: 0;
            overflow: hidden;
            visibility: hidden;
            clear: both;
        }
    }
}